1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svetlana [45]
3 years ago
13

Cos (pi/11)+cos (3pi/11)+cos (5pi/11)+cos (7pi/11)+cos(9pi/11)

Mathematics
1 answer:
WARRIOR [948]3 years ago
4 0
All you have to do is input these terms in a scientific calculator and you would immediately get the answer. However, you should note that the units are in radians. Therefore, make sure that your calculator is in the mode of radians before inputing. Then, you would get an answer of 1/2.
You might be interested in
Which system of linear inequalities is represented by the<br> graph?
ElenaW [278]

Answer:

The solution of a linear inequality is the ordered pair that is a solution to all inequalities in the system and the graph of the linear inequality is the graph of all solutions of the system. Graph one line at the time in the same coordinate plane and shade the half-plane that satisfies the inequality

5 0
3 years ago
The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is the final pressure of the gas, assuming co
salantis [7]

Answer:

(b) 0.30 atm

Step-by-step explanation:

Given data

Initial pressure= 1.2atm

Initial volume= 1.0L

Final volume= 4.0L

Final pressure= ???

Let us apply the gas formula to find the Final pressure

P1V1= P2V2

Substitute

1.2*1= x*4

Divide both sides by 4

1.2/4= x

x= 0.3atm

Hence the final pressure is 0.3 atm

5 0
3 years ago
Leslie tunes musical instruments. Leslie tuned a guitar with 6 strings today. Then she tuned a piano with 37 times as many strin
e-lub [12.9K]

Answer: The piano has 222 strings, because 37×6=222.

Step-by-step explanation:

Since we are informed that Leslie tuned a guitar with 6 strings today and that she then tuned a piano with 37 times as many strings.

This simply means that we have to multiply 37 by 6 strings to get the value of the strings of the piano that she tuned. This will be:

= 6 × 37

= 222 strings.

Leslie tuned 222 strings.

Therefore, the piano has 222 strings, because 37×6=222.

8 0
3 years ago
Which phrase does not have the same meaning as 3/w
Effectus [21]
The answer is A. There is no multiplication sign in the problem. It’s all division.
7 0
3 years ago
The information given represents lengths of sides of a right triangle with c the hypotenuse. Find the correct missing length to
Rus_ich [418]

rule =  {a}^{2}  +  {b}^{2}  =  {c}^{2}

{18}^{2}  +  {26}^{2}  =  {c}^{2}

324 + 676 = 1000

\sqrt{1000}  = 31.62

Answer = A) 31.62

3 0
3 years ago
Other questions:
  • (8*10^7)(2*10^6) simplify the expression and write in scientific notation
    15·1 answer
  • For equation y=6x^2-9x+22 choose the correct application of the quadratic formula
    15·2 answers
  • If angle YWZ = 17, what is angle WXY?
    7·1 answer
  • Can someone help me answer this? Thank you
    12·1 answer
  • Find g(x), where g(x) is the translation 7 units up of f(x)=x2.
    14·2 answers
  • Which expression is equivalent to y • 48?
    13·2 answers
  • Finding circumference.
    8·2 answers
  • What is the center of the circle?
    11·1 answer
  • Two trains leave a station at the same time. One train is heading south at a rate that is 1.5 times faster than the other train,
    9·2 answers
  • You plan to borrow $36,500 at a 7.7% annual interest rate. The terms require you to amortize the loan with 7 equal end-of-year p
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!